﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Data;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Graphics.Display;
using Windows.UI.ViewManagement;

namespace Enough.Converter
{
    /// <summary>
    /// Value converter that translates true to <see cref="Visibility.Visible"/> and false to
    /// <see cref="Visibility.Collapsed"/>.
    /// </summary>
    public sealed class BooleanToVisibilityConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            bool reverse = "reverse".Equals(parameter) || "true".Equals(parameter);
            bool valueIsTrue = (value is bool && (bool)value);
            if (reverse)
            {
                valueIsTrue = !valueIsTrue;
            }
            return (valueIsTrue) ? Visibility.Visible : Visibility.Collapsed;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            bool reverse = "reverse".Equals(parameter) || "true".Equals(parameter);
            bool isVisible = value is Visibility && (Visibility)value == Visibility.Visible;
            if (reverse)
            {
                isVisible = !isVisible;
            }
            return isVisible;
        }
    }
}
